Wilfred c



(No Model.)

W. C. & A. BROTHERS.

SASH BALANCE.

Patented Mar. 29,1898.

Ezrerzzars:

. on the broken line 4 4 in Fig. 1.

NITED STATES PATENT FFICE. I

\VILFRED C. BROTHERS AND ALBERT BROTHERS, LANSINGBURG,

NEW YORK.

SASH-BALANCE.

SPECIFICATION forming part of Letters Patent No. 601,425, dated March 29, 1898. Application filed May 20, 1897. $erial ll'o. 637,334. (No model.)

To all whom it may concern.-

Be it known that we, WILFRED O. BROTH- ERS and ALBERT Bnornnns'oitizens of the United States, residing at Lansingburg, county of Rensselaer, and State of New York, have invented certain new and useful Improvements in Sash-Balances, of which the following is a specification.

The invention relates to such improvements; and it consists of the novel construction and combination of parts hereinafter described and subsequently claimed.

Reference may be had to the accompanying drawings, and the letters of reference marked phereon, which form a part of this specifica- Similar letters refer to similar parts in the several figures therein.

Figure l of the drawings is a vertical section taken through the sash-casing on a plane passing through the middle of the sash, showing the upper portion of our improved sashbalance in position for use. Fig. 2 is a similar section of the lower portion of the device. Fig. 3 is a cross-section taken on the broken line 3 3 in Fig. 1. Fig. 4 is a similar section Fig. 5 is a plan view of the open side of the drum. Fig. 6 is a side view of the drum. Fig. 7 is an edge view of the angle-plate for connecting the tape with the sash. Fig.8 is a face view of the same.

Our invention relates to the class of sashbalance devices wherein the sash is supported by a spring-controlled tape.

Referring to the drawings, A represents a window-sash, and A the casing therefor. The casing is provided with a pair of slideways A adapted to guide thervertical corners of the side of the sash as the sash is raised or lowered in opening and closing the window.

Intermediately of the slideways A we provide a groove A extending longitudinally of the casing and adapted to receive the tape B, which supports the sash and is attached at its upper end to the drum B, upon which the tape is wound.

The drum comprises a cylindrical shell open at one end and provided at the other end with a wall having a central aperture adapted to receive the pin or spindle O, on which the drum rotates.

The spindle O is fixed upon the case 0', which incloses the drum, and is secured in an aperture in the Window-casing by means.

of the face-plate 0 extended at top and bottom to form attaching-flanges O and G which are secured to the face of the window-casing by screws 0 inserted through apertures in such flanges. The peripheral wall of the drum is slitted at B to form two posts B and B to one of which posts, as B the upper end of the tape B is attached by bending the tape around the post to encircle the same one or more times. To the other post, B is attached one end of spiral spring S by bending such end around the post. The other end of the spring is bent sharplyaround an angular flange O on the spindle 0, whereby the force of the spring is exerted to wind the tape upon the drum.

The bottom of the case 0 is provided with a tape-aperture 0 back of the faceplate andcommunicating with the groove A in the window-casing, whereby the tape is permitted to move freely through such aperture without injurious friction upon the face-plate or other part of the device as when the tape is drawn through a slot in the face-plate and across and down below the edge presented by the lower wall or boundary of the slot. The flange or face-plate extension constitutes a guide extending below the body of the case and is adapted to obviate to a considerable extent the buckling of the tape.

The attaching-screw apertures in the lower flange of the face-plate are located near the side edges of the plate, so that the inserted screws pass on opposite sides of the groove A leaving the grooved space unobstructed for the passage of the tape.

The lower end of the tape is connected with the lower end of the sash by means of the angle-plate D, having the vertical arm D, provided with a plurality of slits D through which the tape is laced to effect a secure connection therewith, and the horizontal arm D adapted to underlie the bottom of the sash.

The side and bottom of the sash are recessed or cut away to receive the angle-plate and permit the same to lie flush with the sash surfaces; but the plate is not attached to the sash by'screws or similar devices, being held in simple engagement with the sash by the tension of the tape and by the inclosing walls of the sash-slideways in the window-casing.

Such a form of connection permits the easy a i by Letters Patent, is-- removal of the sash for repairs, cleaning, or

other purposes, the angle-plate being merely slipped. out from under the sash and permitted to be drawn by the spring-actuated tape up to the face-plate, which serves as a stop to its upward movement, the lower edge of the casing-flange being in the direct path of the vertical part of the angle-plate. We are thus able to avoid forming bends or kinks in the tape when removing the sash from the casing, and by providing the channel A for the tape in the casing and the connecting caseaperture 0 back of the face-plate we are able to avoid entirely the rubbing of the sash upon the tape, thereby prolonging the serviceable lifeof the device and permitting the use of non-metallic tape, if desired, although we prefer to use thin brass tape for convenience in making connections with the drumand sash.

We do not claim, broadly, all contrivan'ces for obviating wear of the tape or for guiding it, but the particular construction hereinafter pointed out, whereby the flange or extension of the face-plate cooperates with the casing to guide the tape below the balance-case and whereby said flange is conveniently used as a tape-stop.

What we claim as new, and desire to secure The combination of a rotary drum, a drumcase having a face-plate with an extension or flange below its bottom and said bottom having a tape-aperture back of the face-plate adjacent the flange, a tape provided with a device for connecting it to the sash, a drum-actuating spring, a casing provided with a channel' behind and contiguous the face plate flange forming a tape-conduit, said flange being situated in the path of the tape and sash connecting device whereby the latter is stopped by the flange when disconnected from the sash upon the removal of the latter, substantially as described. I

In testimon y. whereof we have hereunto set our handsthis 17th day of May, 1897.

Witnesses:

GEo. A. TEMPLETON, FRANK C. CURTIS. 

